无线Mesh网络中一种分布式路由方案  

A distributed routing scheme in wireless Mesh networks

作　　者：钟朗[1] 李广军[1] 杨学敏[1] 杨云乐[1] 

机构地区：[1]电子科技大学通信与信息工程学院,四川成都611731

出　　处：《电子技术应用》2015年第7期81-84,共4页Application of Electronic Technique

基　　金：国家自然科学基金(61301155;61176025)

摘　　要：在多射频多信道无线Mesh网络中,链路负载和节点位置的变化将导致网络性能的下降。针对此问题,在混合无线网状路由协议反应式路由基础上,设计了一种新的混合信道分配的分布式路由算法。该算法在路由建立的同时可实现以数据流为单位的最优信道分配,且能避免因单节点失效导致整个网络崩溃的危险。仿真结果表明,提出的RHCA算法较传统算法在网络吞吐量和端到端平均时延方面均有显著优势。另外,在节点移动场景下,所提出的分布式路由算法较其他方法能获得更高的吞吐量和更好的稳健性。The performance of Multi-Radio Multi-Channel （MRMC） wireless Mesh networks fluctuates with the change of link load and locations of nodes. For such problems, a routing based on hybrid channel assignment（RHCA） which improved from Hybrid Wireless Mesh Routing Protocol （HWMP） is proposed. This scheme could both achieves route setup and the optimal channel allocation. The simulation results demonstrate that compared to conventional separated schemes, the proposed RHCA has significant advantages on throughput and average transmission delay. In addition, in the nodes motion scenario, RHCA also has much better robustness.

关 键 词：无线MESH网络 分布式路由算法 信道分配 

分 类 号：TN925.02[电子电信—通信与信息系统]